Fix "Optimize for Tree Style Tab"

[qoyie]

#1803 を修正

[gemini-code-assist]

Summary of Changes

Hello @qoyie, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses an issue related to the 'Optimize for Tree Style Tab' feature by refining the CSS layering. It specifically adjusts the z-index of the Tree Style Tab sidebar to prevent display conflicts and removes a redundant style declaration, leading to a cleaner and more effective stylesheet.

Highlights

• CSS Z-index Adjustment: The z-index property for the Tree Style Tab sidebar (vbox#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"]) has been increased from 1 to 1000 to ensure proper layering and visibility.
• CSS Redundancy Removal: A duplicate and redundant z-index: 1000 !important; declaration for the Tree Style Tab sidebar (#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"]) has been removed, streamlining the stylesheet.

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[roomote]

Rooviewer   See task on Roo Cloud

Review completed. This PR correctly removes duplicate CSS selectors and consolidates the z-index value, resulting in cleaner and more maintainable code. No issues found.

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}

[gemini-code-assist]

Code Review

このプルリクエストは、Tree Style Tabの表示に関する問題を修正するものです。treestyletab.cssにおいて、z-indexの値を1から1000に更新し、重複していたCSSルールを削除しています。この変更により、セレクタの特異性によって意図したz-indexが適用されていなかった問題が解決されます。コードが整理され、保守性も向上しており、適切な修正だと評価します。

[gemini-code-assist]

z-indexにマジックナンバー1000が直接使用されています。このファイルでは他の値がCSSカスタムプロパティとして:rootで定義されているため、一貫性のためにz-indexも同様に変数として定義することを検討してください。

例えば、:rootに--treestyletab-z-index: 1000;を追加し、ここではz-index: var(--treestyletab-z-index) !important;のように参照します。これにより、値の意図が明確になり、将来のメンテナンスが容易になります。